Disclosed is an object of the present invention with regard to drug bag of multi-type mixture, the opening of the compounded drug inlet also to be without at the same time in a single operation of the weak seal opening time. Medical bag 10 Means for Solving the Problems] is formed by soft film-like material, the inner cavity is divided into 20, 22 compartments by a plurality of weak seal 18, to face the compartment 20 of the one compounded drug infusion port 14 is provided so as to. And a compartment 36A, which is sealed for drug storage, 36B, and 36C, the drug component is housed compartment 36A, 36B, to 36C, normally is closed by a 44 peeling layer, the drug component inlet 14 medical bag 10 injection of the drug to the compounding is prevented. Peeling film 44 is adhered firmly to the opposed surface of the plastic film constituting the medical bag. Peeling film 44 diverged displacement integrally with the expanding deformation of the drug bag 10 by the pressing force at the time of opening of the weak seal portion 18, the release film 44 is peeled off from the compounded drug infusion port 14, respective to the drug bag 10 injection of the drug component compartment 36A, 36B, 36C from is performed.【課題】本発明は多液混合型の薬剤バッグに関し、弱シール開通時の一回操作で配合薬剤注入口の開通も同時になしうるようにすることを目的とする。【課題を解決するための手段】薬剤バッグ10は軟弱フィルム状素材にて形成され、その内部空洞は弱シール部18により複数の隔室20、 22に区画され、その一つの隔室20を臨むように配合薬剤注入口14が設けられる。配合薬剤注入口14は薬剤収納のための密閉された隔室36A, 36B, 36Cを備え、隔室36A, 36B, 36Cは配合薬剤が収納され、剥離膜44によって通常は閉鎖され、薬剤バッグ10への配合薬剤の注入が阻止される。剥離膜44は薬剤バッグを構成するプラスチックフィルムの対向面に強固に粘着される。弱シール部18の開通の際の押圧力による薬剤バッグ10の拡開変形に剥離膜44は一体に拡開変位し、剥離膜44は配合薬剤注入口14より剥離され、薬剤バッグ10へ夫々の隔室36A, 36B, 36C からの配合薬剤の注入が行われる。
